Transcript for Dancing With the Stars: Bristol Palin Receives Death Threats

Now, to the death threats on "dancing with the stars." Bristol palin, a target after a suspicious package containing a white powder was sent to the show. Sarah palin is weighing in, as her daughter overcomes a difficult week on the dance floor. Abc's nick watt has the story. Reporter: It was one of the most tear-filled blow joups we've ever seen. Reporter: Bristol palin was an emotional wreck this week. Partner strain and something potentially more serious. What are you saying? You're not there. Reporter: Her mom, sarah, backstage, before the show, broke sinister news on facebook. I'm sorry to say she's getting those annoying death threats and more mystery white powder sent to her while on dwt this all-star season. A package was sent the last time she was on the show in 2010. This time, bristol is defiant. We have security here. We feel safe. I think we're okay. Reporter: So, who would threaten the daughter of momma grizzly? Someone who maybe doesn't have a lot going on in their life. And so, a show like "dancing with the stars," unfortunately, is an ideal target for people who want to just send threats. Reporter: A man tried to break into the studio to meet gymnast shawn johnson when she was on the show. A gun, duct tape and love letters were found in his car, according to police. Security was tightened when erin andrews received e-mail threats. The producers released a statement saying they take the health and safety of all of our competitors and employees very seriously. The lapd is on the trail of the mystery white powder, which turned out not to be anthrax. You do a 360 around the package where it came from. Reporter: Bristol was doing the paso doble for survival. Tonight, double elimination. Get that aggression. It works. Reporter: For "good morning america," nick watt, abc news,

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